Jealousy in excessive amounts destroys the relationship, one of the partners is limited and pushed into complexes. Typical jealous person behavior are hundreds of phone calls during the day, text messages with questions: what do you do, how you feel, where you are now and whose with you? Checking partner’s private mail, browsing the personal things and spying. Morbidly jealous person seeks to limit the independence of the other person. For example, a man demands that the partner shouldn’t work, because then she will not have contact with the other men. Symptoms of a sick envy are also tracking and partner’s full control, striving to reduce the attractiveness of a partner or his self-confidence, the pursuit of addiction partner from each other in terms of financial, manipulating partner’s feelings, inducing guilt, intimidation, abuse, etc. One of the reasons of jealousy is lowered self-esteem. It may involve only one aspect of a person's life who is morbidly jealous. It can consider himself a great organizer, or a parent, but unfortunately, afraid that he isn’t good enough as a partner or he believes that he is not attractive. A person who is morbidly jealous, usually doesn’t see nothing wrong in his behavior and doesn’t notice that he has already exceeded all limits. Often his partner has to to realize this by the tormented attacks of jealousy. Especially in a situation where it is clear that jealousy is out of control, professional help is needed. And when it fails, the best and simple way is  just walking away, even if it’s difficult.